The nucleolus and the synthesis of ribosomes.
D002466:Cell Nucleolus / Q000378:metabolism*; D002499:Centrifugation, Density Gradient; D005815:Genetic Code; D066298:In Vitro Techniques; D014176:Protein Biosynthesis; D012313:RNA / Q000096:biosynthesis*; D012270:Ribosomes / Q000378:metabolism*
D012313:RNA